Seat arm



FIG. 1 is a left front perspective view of a new seat arm showing my new design;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a top perspective view thereof; and,

FIG. 4 is a top view thereof.

The broken lines in all views are for environment only and form no part of the claimed design. The broken lines in FIG. 1 show the unclaimed portion of the seat broken away in the middle to indicate varying lengths. The fragmented depiction of weave patterns shown on the surface of the claimed design are understood to repeat uniformly across that surface. 

The ornamented design for a seat arm, as shown and described. 